tofsee | cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97

General

Target

cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe
Size

12.1MB
MD5

0933a84caaad7a803af9327f00b427ea
SHA1

a819feb2801a42a00108a1e5989c0b8cab3a7620
SHA256

cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97
SHA512

665358ff9632179f2a872ff3b7d8185ba842569aa9af95cd9a65851d24d750bc9eebe50acb76e4b4cb1808baeed4637eaca167f01e6f89a720b4349ae9338a38
SSDEEP

49152:P1m333333333333333333333333333333333333333333333333333333333333w:d

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\nitzfwpb = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

2804 netsh.exe

pid	process
2804	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\nitzfwpb\ImagePath = "C:\\Windows\\SysWOW64\\nitzfwpb\\kdoepmfy.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2924 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

kdoepmfy.exe

pid process

2932 kdoepmfy.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

kdoepmfy.exe

description pid process target process

PID 2932 set thread context of 2924 2932 kdoepmfy.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2940 sc.exe
2784 sc.exe
2888 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2924	svchost.exe

pid	process
2932	kdoepmfy.exe

description	pid	process	target process
PID 2932 set thread context of 2924	2932	kdoepmfy.exe	svchost.exe

pid	process
2940	sc.exe
2784	sc.exe
2888	sc.exe

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

Processes:

netsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

cmd.execmd.exesc.exesc.exekdoepmfy.exesvchost.execd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exenetsh.exesc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kdoepmfy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exekdoepmfy.exe

description	pid	process	target process
PID 2492 wrote to memory of 1628	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	cmd.exe
PID 2492 wrote to memory of 1628	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	cmd.exe
PID 2492 wrote to memory of 1628	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	cmd.exe
PID 2492 wrote to memory of 1628	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	cmd.exe
PID 2492 wrote to memory of 1884	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	cmd.exe
PID 2492 wrote to memory of 1884	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	cmd.exe
PID 2492 wrote to memory of 1884	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	cmd.exe
PID 2492 wrote to memory of 1884	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	cmd.exe
PID 2492 wrote to memory of 2940	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 2492 wrote to memory of 2940	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 2492 wrote to memory of 2940	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 2492 wrote to memory of 2940	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 2492 wrote to memory of 2784	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 2492 wrote to memory of 2784	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 2492 wrote to memory of 2784	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 2492 wrote to memory of 2784	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 2492 wrote to memory of 2888	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 2492 wrote to memory of 2888	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 2492 wrote to memory of 2888	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 2492 wrote to memory of 2888	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	sc.exe
PID 2492 wrote to memory of 2804	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	netsh.exe
PID 2492 wrote to memory of 2804	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	netsh.exe
PID 2492 wrote to memory of 2804	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	netsh.exe
PID 2492 wrote to memory of 2804	2492	cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe	netsh.exe
PID 2932 wrote to memory of 2924	2932	kdoepmfy.exe	svchost.exe
PID 2932 wrote to memory of 2924	2932	kdoepmfy.exe	svchost.exe
PID 2932 wrote to memory of 2924	2932	kdoepmfy.exe	svchost.exe
PID 2932 wrote to memory of 2924	2932	kdoepmfy.exe	svchost.exe
PID 2932 wrote to memory of 2924	2932	kdoepmfy.exe	svchost.exe
PID 2932 wrote to memory of 2924	2932	kdoepmfy.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe
"C:\Users\Admin\AppData\Local\Temp\cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nitzfwpb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1628
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kdoepmfy.exe" C:\Windows\SysWOW64\nitzfwpb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nitzfwpb binPath= "C:\Windows\SysWOW64\nitzfwpb\kdoepmfy.exe /d\"C:\Users\Admin\AppData\Local\Temp\cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2940
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nitzfwpb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2784
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nitzfwpb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2888
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2804

C:\Windows\SysWOW64\nitzfwpb\kdoepmfy.exe
C:\Windows\SysWOW64\nitzfwpb\kdoepmfy.exe /d"C:\Users\Admin\AppData\Local\Temp\cd61ea8708b9c3c220abea2b04d5cc209fd8949d3b88575dab0289539b232f97.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2932
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\kdoepmfy.exe

Filesize
14.5MB

MD5
180e9970856d88e0664e5d0dd49dd9c0

SHA1
07c380b438435e5201b5a1754cc3b422324bd3ae

SHA256
26bec33d5423f1146e4747d7fc5500aa2210f63b447f6cbf6f1f71f1faab5aaf

SHA512
c20d76744b2eda02968884fdc75790fb5da29665c724b5e350c93bf2b83f8393b9c4efb5ab92606bcd8348909c4474edfdd320890b5605bb15c0b808d15794d7

Download Submit
memory/2492-1-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/2492-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2492-4-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2492-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2492-9-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2924-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2924-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2924-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2924-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2924-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2932-15-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads